在Whirl-Pak® 无菌袋上做标记或这在其他塑料制品袋子上面做标记，这种永久的防水的标记笔是最理想的选择了。笔尖书写顺畅流利，而且还有回形夹子可以很方便的别在衣服上。永久性黑色标记笔单独销售。12支/盒。上海瑞亿仪器有限公司

For marking on Whirl-Pak® bags without a write-on strip, ａnd many other plastic products, this permanent, waterproof marking pen is ideal. It has a fine point so numbers ａnd letters can be written easily; it also has a clip so it can be attached to clothing. These indelible black ink pens are sold individually or in a box of 12